A wildfire that broke out early Thursday near Santa Paula is now 90 percent contained, according to the Ventura County Fire Department.

The fire was reported at 1:39 a.m. at eastbound Highway 126 and Briggs Road east of Santa Paula.

By 9:35 a.m., firefighters managed to hold the blaze at 50 acres in the river bottom, and it was not threatening any structures, Ventura County fire officials said. Fire crews were expected to stay into the night to fully contain the fire.

The incident was mostly terrain and fuel driven, officials said. Wind did not appear to be a factor. The fire was creating large plumes of smoke.

Air tankers were were sent to the scene as of 6:40 a.m.

The first crews to arrive on scene said the fire was 2 to 3 acres in size, though they predicted it would probably grow, with the potential to reach 100 to 200 acres. They said it would be difficult to reach.

Several units responded to the incident, including ground crews, bulldozers and a helicopter, according to the Ventura County Fire Department. A strike team was also requested.